export const timer = () => {
    let time = ''
    let houer = new Date().getHours()
    if (houer < 9) {
        time = '早上好！'
    } else if (houer < 12) {
        time = '上午好！'
    } else if (houer < 18) {
        time = '下午好！'
    } else {
        time = '晚上好！'
    }
    return time
}
